From cd2f3627a6c7c3bc839ccfd5d06f3a3a1105c1cf Mon Sep 17 00:00:00 2001
From: Alexander von Gluck IV <kallisti5@unixzen.com>
Date: Tue, 29 Dec 2020 18:46:45 -0600
Subject: [PATCH] meson: Add _GNU_SOURCE for Haiku to activate non-posix
 functions

Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
---
 meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meson.build b/meson.build
index 6193357b186..23380319cc5 100644
--- a/meson.build
+++ b/meson.build
@@ -970,7 +970,7 @@ if cc.compiles('__uint128_t foo(void) { return 0; }',
 endif
 
 # TODO: this is very incomplete
-if ['linux', 'cygwin', 'gnu', 'freebsd', 'gnu/kfreebsd'].contains(host_machine.system())
+if ['linux', 'cygwin', 'gnu', 'freebsd', 'gnu/kfreebsd', 'haiku'].contains(host_machine.system())
   pre_args += '-D_GNU_SOURCE'
 elif host_machine.system() == 'sunos'
   pre_args += '-D__EXTENSIONS__'